I want Finn to really start to kick ass now that the best parts of himself are no longer being suppressed. He's on a personal mission to become the First Order's number one regret. He helps the Resistance with strategy and intel, not just by telling them what he knows but by using his instinctive understanding of the FO's psychology to predict their next moves and make them run circles around themselves. Every time there's a major Resistance victory, Finn is a big part of it. Every time the FO fucks up, it's because Finn made them fuck up. They thought the Jedi coming back was bad? They had no idea their former sanitation trooper was the piece that would change the tide of the war.